Abstract

In current study, an effort is made to improve the overall performance of the solar powered organic Rankine system to meet increasing energy demand and mitigate the resulting menace caused by environmental imbalance. Hourly performance evaluation of Solar powered Organic Rankine Cycle (ORC) system is done for varying concentration ratio in terms of collector output temperature, heat gain in evaporator, combined thermal and exergetic efficiency. The Heptane/R245fa is used as working fluid at fixed (0.1/0.9) fractional mass component. Organic Rankine system is coupled with reversed absorber hybrid photovoltaic thermal compound parabolic concentrator (PVTCPC). The highest collector outlet temperature 125.45 °C, heat gain 3.21 × 105 W, combined thermal efficiency 7.8%, and exergetic efficiency 14.38% is observed at 13:00 h for 6 concentration ratio of the concentrator. This study establishes the utility of low-grade renewable heat source conversion into solar electrification, solar irrigation, solar cooling and solar water purification.

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